[OZAPRS] Beacon Intervals - Reminder

[Andrew Rich (Home)]

Here's a thought for you

If I keyed up on 145.175 MHz on the top of a hill that would be considered intentional interrference 

So at at what point does a high beacon rate border on being interference ?

There is NO protection against it.


----------------------------------------------------------
Andrew Rich 
Airways Technical Officer Grade 4
Surveillance - RADAR ADS-B
Amateur Radio Callsign VK4TEC
email: vk4tec at tech-software.net
web: www.tech-software.net
  ----- Original Message ----- 
  From: Andrew Rich (Home) 
  To: Australian APRS Users 
  Sent: Sunday, August 30, 2009 10:50 AM
  Subject: Re: [OZAPRS] Beacon Intervals - Reminder


  Yep thats down right irresponsible 

  Seeing 1200 baud takes some seconds to send.


  ----------------------------------------------------------
  Andrew Rich 
  Airways Technical Officer Grade 4
  Surveillance - RADAR ADS-B
  Amateur Radio Callsign VK4TEC
  email: vk4tec at tech-software.net
  web: www.tech-software.net
    ----- Original Message ----- 
    From: Geoff Gatward 
    To: 'Australian APRS Users' 
    Sent: Sunday, August 30, 2009 9:14 AM
    Subject: [OZAPRS] Beacon Intervals - Reminder


    Folks,

     

    It seems that there are a group of users in the Central Coast/Newcastle region that have set a new standard for APRS trackers, using a THREE second beacon interval.  (Three callsigns have been noted doing this during initial investigations into the failure of the VK2RTZ-1 digipeater - not sure yet if this is related)

     

    PLEASE make sure that your beacon interval is set to NO LESS THAN 60 seconds.

     

    3 seconds does two things, both VERY bad.

    a.       Saturates the frequency locally so nobody else in simplex range can send their own beacons

    b.      Saturates the input of the receiving digipeaters so that nobody else in the digi coverage area can send their own beacons

     

    If you are in the area and notice anyone configured in this way, PLEASE ask them to change their setup.

    The configuration guidelines implemented NATIONALLY can be found here:   http://aprs.net.au/vhf_guidelines.php

     

     

    Regards,

    Geoff  VK2XJG

     



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